Hall, Richard P.  1900-1969. <br/><br/>
Protozoa;  the simplest of all animals / 
Richard P. Hall. 
 - New York :   Holt, Rinehart and Winston,   c1964 
 - 123 p. :   ill. ;   21 cm. 
 - Holt library of science ;  ser. 2, v. 22 .
 - Holt library of science ;  ser. 2, v. 22. .
<br/><br/>Bibliography: p. 111. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Protozoology.
<br/><br/><label>Dewey Class. No.: </label>579.4  / HAP 1964